Late retirement, early careers, and the aging of U.S. science and engineering professors
(a) Age distribution of faculty in 1995 and 2010. (b) Annual hazard rates of attrition based on 1995–1999 surveys and 2008–2010 surveys. (c) Age distribution of new tenure-track hires in 1995 and 2010. Note: we define a new faculty member as a tenure-track faculty member hired within two years when observed.